Matrix clock



FIG. 1 is a front elevational view of a matrix clock showing our newdesign;

FIG. 2 is a second front elevational view of our design of FIG. 1; and,

FIG. 3 is a third front elevational view of the design of FIG. 1.

The base structure in FIG. 1, the building structure in FIG. 2, and thepedestal structure in FIG. 3, depicted by broken lines, have been shownfor the purpose of illustrating environment that forms no part of theclaimed design.

CLAIM The ornamental design for a matrix clock, as shown and described.